First of all, I am a newbie in 3D printing field. I have build a repstrap printer. I am trying to build Reprap Samuel 3D printer. Sometime my repstrap prints successfully. But most of times it stops extruding after 2-3 layers, I try everything but couldn’t sort out this problem. Need help here. Tell me major causes.
Images attached for more understanding.
What kind of extruder are you using?
you need a barrel lined with PTFE.